22 BIRDS OF MAINE. 



Subgenus STERNULA Boie. 



32. (74). Sterna antillarum (Less.). Least Tern. 



Formerly of quite regular occurrence on the Green Islands in 

 Casco Bay. It is reported by Mr. Boardman as being accidental 

 at Grand Menan, New Brunswick. There are no recent records. 



County Records. Cumberland, "formerly occurred every year at Green 

 Islands, but none seen for a number of years"' (Brown's Cat. Birds of 

 Portland, p. 35 j. 



Subgenus HALIPLANA Wagler. 



33. (75). Sterna fuligiuosa Gmel. Sooty Tern. 



There is only one specimen recorded from the state, and this 

 was taken at Parkman in Piscataquis County, October 5, 1878. It 

 is recorded by Ruthven Deane in the Bulletin of the Nuttall Orni- 

 thological Club, Vol. 5, page 64. 



Genus HYDROCHELIDON Boie. 



34. (77). Hydrochelidon nigra surinamensis (Gmel.). 



Black Tern. 



This species is of rare or casual occurrence in the migrations. 

 It is reported by Mr. Boardman as accidental at Grand Menan, 

 New Brunswick. 



County Records. Cumberland, "transient in autumn, uncommon" 

 (Brown's Cat. Birds of Portland, p. 35) ; York, "occurs at Wells Beach" 

 (Brown in Bull. Nutt. Orn. Club, Vol. 7, p. 190). 



Family RYNCHOPIDJE. Skimmers. 

 Genus RYNCHOPS Linnaeus. 



35. (80). Rynchops nigra Linn. Black Skimmer. 



An accidental visitor from the south. Several specimens have 

 been taken at various times. 



County Records. Knox, "Matinicus Island" (recorded in Smith's List 

 of Birds of Maine, Forest and Stream, Vol. 20, p. 205) ; Washington, 

 "accidental" (Boardman) ; York, "taken at Wells Bay" (recorded in 

 Smith's List as above). 



